White Will Capture Immediately
– Black Has to Block
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In order to simplify the position and to avoid giving Black any chances, KataGo decided to capture Black's single stone immediately with |
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Black's block at |
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Let's calculate the territorial impact of KataGo's new moves. Shown is the board position after White's tsuke of Yamada Shinji with Note: The Semeai Variation is not affected; it still ends by 3 points for Black. |

.
is mandatory.
in response to Black's atari at
. In order to realize her territorial gain in the lower left, White will later capture Black's tail with a move at
(Capture Variation).
in response to White's atari at
to the same effect.
, where Black later played the atari at
,
).
), so gaining one point.
, so gaining two points.



), so -- for the moment -- we can neglect the problem that this tenuki loses a decisive move in the Main Semeai.
reduces White's group at the left to only one eye.
and the throw-in at
at her disposal. Even if Black captures with
, ...
. Black
and ...
are miai, so White lives at the left edge.
